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OPTIMALISASI PENGGUNAAN AIR PADA LAHAN SAWAH

Chusnul Arif


FAKTA PADI SAWAH  Sektor pertanian adalah sektor yang memerlukan banyak air  70% air dikonsumsi oleh pertanian (World Water Council)  Pertanian padi di Asia Tenggara mengambil 64-83% air irigasi  Sumber referensi: pertumbuhan padi akan lebih baik dalam kondisi tergenang


Kasus: Kebutuhan air di Sukabumi


Alternatif sistem budidaya: SRI • Berbeda dengan umumnya tanam padi – – – – – –

Benih muda Tanam tunggal Jarak tanam lebar Pupuk organik Lebih intensif Irrigasi berselang (intermittent): Alternate Wetting and Drying Irrigation (AWDI)


Konsep SRI • Konsep 1:

Benih Muda

Tanam Tunggal


Konsep SRI • Konsep 2: Jarak lebar


Konsep SRI • Konsep 3: Intermittent Irrigation


SRI Basic Concepts • Concept 4: Careful cultivation management


SRI Basic Concepts • Results: Dense and Tough Paddies


SRI Basic Concepts • SRI and Non-SRI


Tema Penelitian: Optimalisasi Management Air Sawah Maximize

SRI Paddy Field

Minimize

Water Management

Land Productivity

Target

Water Productivity

Goal

GHG Emissions

Improve

Y

N


SRI MONITORING SYSTEM


SRI MONITORING SYSTEM

http://www.x-ability.jp/~swampred/index.php?dfw=fns1


SRI MONITORING SYSTEM

http://emsa-sri.org/emsa-sri-sites


CURRENT RESULTS • Plant Growth Monitoring

Image calendar


CURRENT RESULTS • Plant Growth Monitoring

Planting

Crop development

Early stage

Reproductive stage

Vegetative stage

Late stage


CURRENT RESULTS 50

100

45

90

40 80 35

TAve TMin

TMax RHAve

Missing data

70

30 25

20 10/14/2010 11/12/2010 12/11/2010 1/9/2011

60 50 2/7/2011

Average Relative Humidity (%)

Average air temperature (oC)

• Meteorological parameters


CURRENT RESULTS • Meteorological parameters Solar Rad(MJ/m2/day)

ETo(mm)

11/12/2010

1/9/2011

10 ETo(mm)

Solar Rad (MJ/m2/day)

12

8 6 4 2

0 10/14/2010

12/11/2010

2/7/2011


CURRENT RESULTS • Soil Parameters 1.000

0

0.900

VWC (m3/m3)

0.800 100

0.700 0.600

150

0.500 200

0.400 0.300

250 0

20

40

60 80 100 Days after transplanting (day)

Precipitation(mm)

50 P I II III IV


FUTURE NEED • Data Analyzing: – Water Productivity – Water efficiency

• Next Planting: – Water level variation – GHG emission – Weeding control


SELESAI

Optimalisasi Penggunaan Air pada Lahan Sawah  

Presentasi Chusnul Arief, MSi (PhD Student di University of Tokyo)

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